kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

I'd like to perform a bisect to figure out what commit caused this
regression. We need to identify the earliest kernel where the issue
started happening as well as the latest kernel that did not have this
issue.

Can you test the following kernels and report back? We are looking for
the first kernel version that exhibits this bug:

v3.13 Final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-trusty/
v3.13.5: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.5-trusty/
v3.13.11.4: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.11.4-trusty/

You don't have to test every kernel, just up until the kernel that first
has this bug.

Thanks in advance!

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Tags added: performing-bisect

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https://bugs.launchpad.net/bugs/1356558

Title:
  BUG: soft lockup - CPU stuck for 22s! [md3_raid1]

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  this bug appeared in Ubuntu 14.04, Ubuntu 12.04 didn't show this behavior. 
  I've found a possible predecessor in bug #212684.
  Switching to a recent mainline kernel didn't fix this issue.

  Starting

   $ /usr/share/mdadm/checkarray /dev/md3

  will repeat this behavior.

  /dev/md3 is a LVM PV:

    --- Physical volume ---
    PV Name               /dev/md3
    VG Name               local_vg1
    PV Size               1.36 TiB / not usable 2.25 MiB
    Allocatable           yes 
    PE Size               4.00 MiB
    Total PE              355619
    Free PE               31011
    Allocated PE          324608

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-33-generic 3.13.0-33.58
  ProcVersionSignature: Ubuntu 3.13.0-33.58-generic 3.13.11.4
  Uname: Linux 3.13.0-33-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-33-generic.
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: i386
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
  Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
  Date: Wed Aug 13 21:42:12 2014
  HibernationDevice: RESUME=UUID=c4a03c5e-f650-4ca8-9dab-f0c4ad12c901
  InstallationDate: Installed on 2014-07-06 (37 days ago)
  InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
  IwConfig:
   lo        no wireless extensions.
   
   em1       no wireless extensions.
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-33-generic root=UUID=9c2715cb-dd8a-4687-9537-009e1e4e83d8 ro nomdmonddf nomdmonisw
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-33-generic N/A
   linux-backports-modules-3.13.0-33-generic  N/A
   linux-firmware                             1.127.5
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/19/2010
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: JT94510H.86A.0045.2010.0519.1750
  dmi.board.name: D945GSEJT
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAE57850-300
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorp.:bvrJT94510H.86A.0045.2010.0519.1750:bd05/19/2010:svn:pn:pvr:rvnIntelCorporation:rnD945GSEJT:rvrAAE57850-300:cvn:ct3:cvr:

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